iPhone finally available on Verizon Wireless, and though the new iPhone for CDMA network looks identical to the existing iPhone for UTMS (3GSM) and GSM mobile networks (used on AT&T and most mobile carriers worldwide), there are still some differences between them in terms of design, layout, features and specifications.
The main change is to make iPhone work on a CDMA network, a distinctive mobile communication technology from UTMS/GSM. Apple also makes the change on design to fix the antenna drops signal issue.

Built-in rechargeable lithium-ion batteryTalk time: Up to 7 hours on 3G and up to 14 hours on 2GStandby time: Up to 300 hoursInternet use: Up to 6 hours on 3G and up to 10 hours on Wi-FVideo playback: Up to 10 hoursAudio playback: Up to 40 hours

Built-in rechargeable lithium-ion batteryTalk time: Up to 7 hours on 3GStandby time: Up to 300 hoursInternet use: Up to 6 hours on 3G and up to 10 hours on Wi-FVideo playback: Up to 10 hoursAudio playback: Up to 40 hours